Acknowledgement

This publication was made possible with the support of the MOST
programme of the Social and Human Science Sector of UNESCO. The
authors are responsible for the choice and the presentation of the facts
contained in this publication and for the opinions expressed herein, which
are not necessarily those of, and do not commit, UNESCO.

The designations employed and the presentation of material throughout
this publication do not imply the expression of any opinion whatsoever on
the part of the UNESCO Secretariat concerning the legal status of
any country, territory, city or area of its authorities, or the
delimitations of its frontiers or boundaries.